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This script processes model results from the Canadian Wildlife Survey to extract regional bird population trends from the USGS Breeding Bird Survey. The script pulls pulls annual indices and genreates plots for data from Minnesota Bird Conservation Region #23 (which is where all Three Rivers parks are located). These trends are used as a baseline in other analyses to compare against trends within the parks. This script is a prerequisite for other analyses.

Setup

Load required packages & data

library(tidyverse)
library(here)
library(auk)

source(here("Scripts", "1_Data_Import.R"))
# source(here("Scripts", "2_Spatial_Data_Import.R"))
# source(here("Scripts", "3_Data_Cleaning.R"))
# source(here("Scripts", "4_Covariate_Data_Prep.R"))
source(here("Scripts", "5_Prep_Species.R"))

Prepare data

# Read BBS index data for a specific stratum (US-MN-23)
dat_indices <- read_csv(here("Data", "Wildlife", "BBS", "BBS_CWS", "All_2021_BBS_indices.csv"), show_col_types = FALSE) %>%
  filter(Strata_included == "US-MN-23")

head(dat_indices)

# Align BBS species with eBird taxonomy
dat_indices$species[which(dat_indices$species == "Red-tailed Hawk (all forms)")] <- "Red-tailed Hawk"
dat_indices$species[which(dat_indices$species == "Northern Flicker (all forms)")] <- "Northern Flicker"

# Do the same with trend data
dat_trends <- read_csv(here("Data", "Wildlife", "BBS", "BBS_CWS", "All_2021_BBS_trends.csv"), show_col_types = FALSE) %>%
  filter(
    Strata_included == "US-MN-23",
    Region_type == "stratum"
  )

dat_trends$species[which(dat_trends$species == "Red-tailed Hawk (all forms)")] <- "Red-tailed Hawk"
dat_trends$species[which(dat_trends$species == "Northern Flicker (all forms)")] <- "Northern Flicker"

dat_trends <- dat_trends %>%
  select(-Trend_Time) %>%
  mutate(across(starts_with("Trend"), ~ round(., 1)))

dat_trends_1970to2021 <- dat_trends %>% filter(Start_year == "1970")
dat_trends_2011to2021 <- dat_trends %>% filter(Start_year == "2011")

# Create a unique list of species
sp_list <- unique(dat_indices$species)

# Drop problematic species
sp_list <- sp_list[-c(65, 73, 115, 137)] # drop "Sapsuckers (Yellow-bellied\Red-naped\Red-breasted\Williamson's)" and "Solitary Vireo (Blue-headed\Cassin's)" and "Traill's Flycatcher (Alder\Willow)" and ""Northern Oriole (Bullock's/Baltimore)" because they break things.

Process data

# Function to process and visualize data for a focal species. Saves indices as csv and genreates plot showing trend.
process_data <- function(focal_species) {
  dat_sp <- filter(dat_indices, species == focal_species)
  write_csv(dat_sp, paste0(here("Results", "993_BBS_fromCWS", "Indices"), "/", focal_species, ".csv"))

  p <- ggplot2::ggplot() +
    ggplot2::geom_point(data = dat_sp, ggplot2::aes(x = Year, y = obs_mean), colour = "navy", alpha = .4, size = 1) +
    ggplot2::geom_line(data = dat_sp, ggplot2::aes(x = Year, y = Index), colour = "navy", size = .8) +
    ggplot2::geom_ribbon(data = dat_sp, ggplot2::aes(x = Year, ymin = Index_q_0.025, ymax = Index_q_0.975), fill = "navy", alpha = 0.2) +
    scale_x_continuous(limits = c(1967, 2021), breaks = seq(from = 1965, to = 2020, by = 5)) +
    ggplot2::scale_y_continuous(limits = c(0, NA)) +
    ggthemes::theme_clean() +
    ggplot2::theme(
      axis.line = element_line(colour = "black"),
      plot.title = ggplot2::element_text(size = 16),
      plot.subtitle = ggplot2::element_text(size = 12),
      axis.title = ggplot2::element_text(size = 12),
      axis.text = ggplot2::element_text(size = 12)
    ) +
    ggplot2::labs(
      title = focal_species,
      x = "Year",
      y = "Annual index of abundance (mean count)",
      subtitle = "Breeding Bird Survey: Minnesota BCR #23"
    )

  ggsave(filename = paste0(focal_species, ".png"), plot = p, path = here("Results", "993_BBS_fromCWS", "Plots"), width = 7, height = 5)
}

# Get list of species that haven't been processed yet (in previous runs of this code)
species_to_run <- list.files(
  path = here("Results", "993_BBS_fromCWS", "Plots")
)
species_to_run <- gsub("\\.png", "", species_to_run)
species_to_run <- setdiff(sp_list, species_to_run)

# Apply the processing function to each species
lapply(species_to_run, process_data)

# Save the BBS indices as RDS
# saveRDS(dat_indices, here("Results", "993_BBS_fromCWS", "Indices","00_all_sp_MN23.RDS"))

Visualize data

files <- list.files(path = here("Results", "993_BBS_fromCWS", "Plots"), full.names = TRUE)
files_names <- list.files(path = here("Results", "993_BBS_fromCWS", "Plots"), full.names = FALSE)
files_names <- gsub("\\.png", "", files_names)

for (i in 1:length(files)) {
  cat(paste0("### ", files_names[i], "\n"))
  cat(paste0("![](", files[i], ")\n\n"))
  cat(paste0("**Total percent change, 1970-2021:** ", dat_trends_1970to2021$Percent_Change[which(dat_trends_1970to2021$species == files_names[i])], "% (95% CI: ", dat_trends_1970to2021$Percent_Change_Q0.025[which(dat_trends_1970to2021$species == files_names[i])], "% to ", dat_trends_1970to2021$Percent_Change_Q0.975[which(dat_trends_1970to2021$species == files_names[i])], "%)", "\n\n"))
  cat(paste0("**Annual trend (% change/year), 1970-2021:** ", dat_trends_1970to2021$Trend[which(dat_trends_1970to2021$species == files_names[i])], "% (95% CI: ", dat_trends_1970to2021$Trend_Q0.025[which(dat_trends_1970to2021$species == files_names[i])], "% to ", dat_trends_1970to2021$Trend_Q0.975[which(dat_trends_1970to2021$species == files_names[i])], "%)", "\n\n"))
  cat(paste0("**Total percent change, 2011-2021:** ", dat_trends_2011to2021$Percent_Change[which(dat_trends_2011to2021$species == files_names[i])], "% (95% CI: ", dat_trends_2011to2021$Percent_Change_Q0.025[which(dat_trends_2011to2021$species == files_names[i])], "% to ", dat_trends_2011to2021$Percent_Change_Q0.975[which(dat_trends_2011to2021$species == files_names[i])], "%)", "\n\n"))
  cat(paste0("**Annual trend (% change/year), 2011-2021:** ", dat_trends_2011to2021$Trend[which(dat_trends_2011to2021$species == files_names[i])], "% (95% CI: ", dat_trends_2011to2021$Trend_Q0.025[which(dat_trends_2011to2021$species == files_names[i])], "% to ", dat_trends_2011to2021$Trend_Q0.975[which(dat_trends_2011to2021$species == files_names[i])], "%)", "\n\n"))
}

(Yellow-shafted Flicker) Northern Flicker

Total percent change, 1970-2021: -76.8% (95% CI: -85.8% to -66.7%)

Annual trend (% change/year), 1970-2021: -2.8% (95% CI: -3.7% to -2.1%)

Total percent change, 2011-2021: -18.7% (95% CI: -46.7% to 13.8%)

Annual trend (% change/year), 2011-2021: -2% (95% CI: -5.7% to 1.6%)

Alder Flycatcher

Total percent change, 1970-2021: % (95% CI: % to %)

Annual trend (% change/year), 1970-2021: % (95% CI: % to %)

Total percent change, 2011-2021: -7.08% (95% CI: -30.3% to 25.3%)

Annual trend (% change/year), 2011-2021: -0.7% (95% CI: -3.4% to 2.4%)

American Bittern

Total percent change, 1970-2021: -98.5% (95% CI: -99.9% to -95.2%)

Annual trend (% change/year), 1970-2021: -7.9% (95% CI: -10.6% to -5.4%)

Total percent change, 2011-2021: -29.5% (95% CI: -79.7% to 46.1%)

Annual trend (% change/year), 2011-2021: -3.4% (95% CI: -11.8% to 5.1%)

American Coot

Total percent change, 1970-2021: -86.8% (95% CI: -99.6% to -55.3%)

Annual trend (% change/year), 1970-2021: -3.9% (95% CI: -7.1% to -1.1%)

Total percent change, 2011-2021: -46.8% (95% CI: -84% to -7.29%)

Annual trend (% change/year), 2011-2021: -6.1% (95% CI: -15% to 0.4%)

American Crow

Total percent change, 1970-2021: 16.2% (95% CI: -7.61% to 50.6%)

Annual trend (% change/year), 1970-2021: 0.3% (95% CI: -0.2% to 0.8%)

Total percent change, 2011-2021: -21.4% (95% CI: -35.5% to -10.3%)

Annual trend (% change/year), 2011-2021: -2.4% (95% CI: -4.1% to -0.9%)

American Goldfinch

Total percent change, 1970-2021: 10.8% (95% CI: -19.9% to 50.6%)

Annual trend (% change/year), 1970-2021: 0.2% (95% CI: -0.4% to 0.8%)

Total percent change, 2011-2021: -31.3% (95% CI: -44.8% to -17.2%)

Annual trend (% change/year), 2011-2021: -3.7% (95% CI: -5.8% to -1.9%)

American Kestrel

Total percent change, 1970-2021: -75.6% (95% CI: -86.9% to -60%)

Annual trend (% change/year), 1970-2021: -2.7% (95% CI: -3.7% to -1.7%)

Total percent change, 2011-2021: -37.9% (95% CI: -60.8% to -17.4%)

Annual trend (% change/year), 2011-2021: -4.7% (95% CI: -8.3% to -1.5%)

American Redstart

Total percent change, 1970-2021: 122% (95% CI: 24.9% to 244%)

Annual trend (% change/year), 1970-2021: 1.6% (95% CI: 0.6% to 2.6%)

Total percent change, 2011-2021: 8.86% (95% CI: -24.3% to 39.9%)

Annual trend (% change/year), 2011-2021: 0.9% (95% CI: -2.8% to 3.4%)

American Robin

Total percent change, 1970-2021: 6.41% (95% CI: -10.7% to 25.1%)

Annual trend (% change/year), 1970-2021: 0.1% (95% CI: -0.2% to 0.5%)

Total percent change, 2011-2021: -20% (95% CI: -33.2% to -11.1%)

Annual trend (% change/year), 2011-2021: -2.2% (95% CI: -4% to -1.2%)

American White Pelican

Total percent change, 1970-2021: 12200% (95% CI: 447% to 141000%)

Annual trend (% change/year), 1970-2021: 9.9% (95% CI: 5.2% to 15.8%)

Total percent change, 2011-2021: 27.1% (95% CI: -57.1% to 163%)

Annual trend (% change/year), 2011-2021: 2.4% (95% CI: -5.5% to 11.9%)

American Woodcock

Total percent change, 1970-2021: -65.7% (95% CI: -99.6% to 26.1%)

Annual trend (% change/year), 1970-2021: -2.1% (95% CI: -5.8% to 1.2%)

Total percent change, 2011-2021: -16.1% (95% CI: -64% to 53%)

Annual trend (% change/year), 2011-2021: -1.7% (95% CI: -8.5% to 5.2%)

Bald Eagle

Total percent change, 1970-2021: 35500% (95% CI: 2820% to 413000%)

Annual trend (% change/year), 1970-2021: 12.2% (95% CI: 8.3% to 18.2%)

Total percent change, 2011-2021: 119% (95% CI: -2.08% to 241%)

Annual trend (% change/year), 2011-2021: 8.1% (95% CI: 2% to 14.3%)

Baltimore Oriole

Total percent change, 1970-2021: -31.6% (95% CI: -50.3% to -6.76%)

Annual trend (% change/year), 1970-2021: -0.7% (95% CI: -1.3% to -0.1%)

Total percent change, 2011-2021: -13.2% (95% CI: -27.8% to 5.77%)

Annual trend (% change/year), 2011-2021: -1.4% (95% CI: -3.1% to 0.7%)

Bank Swallow

Total percent change, 1970-2021: -89.7% (95% CI: -97.4% to -75.7%)

Annual trend (% change/year), 1970-2021: -4.3% (95% CI: -6.4% to -2.5%)

Total percent change, 2011-2021: 9.4% (95% CI: -49.1% to 101%)

Annual trend (% change/year), 2011-2021: 0.9% (95% CI: -4.9% to 8.2%)

Barn Swallow

Total percent change, 1970-2021: -7.16% (95% CI: -29.8% to 21.5%)

Annual trend (% change/year), 1970-2021: -0.1% (95% CI: -0.7% to 0.4%)

Total percent change, 2011-2021: -19.1% (95% CI: -31.9% to -7.19%)

Annual trend (% change/year), 2011-2021: -2.1% (95% CI: -3.8% to -0.7%)

Barred Owl

Total percent change, 1970-2021: 174% (95% CI: -32.8% to 544%)

Annual trend (% change/year), 1970-2021: 2% (95% CI: 0.1% to 4%)

Total percent change, 2011-2021: 22.5% (95% CI: -28.5% to 78%)

Annual trend (% change/year), 2011-2021: 2% (95% CI: -2.7% to 6.3%)

Belted Kingfisher

Total percent change, 1970-2021: -50.6% (95% CI: -73.2% to -28.9%)

Annual trend (% change/year), 1970-2021: -1.4% (95% CI: -2.4% to -0.5%)

Total percent change, 2011-2021: -10.5% (95% CI: -34.6% to 12.2%)

Annual trend (% change/year), 2011-2021: -1.1% (95% CI: -3.5% to 1.6%)

Black-and-white Warbler

Total percent change, 1970-2021: 49.8% (95% CI: -46.1% to 293%)

Annual trend (% change/year), 1970-2021: 0.8% (95% CI: -0.7% to 2.9%)

Total percent change, 2011-2021: 6.11% (95% CI: -34.1% to 59.9%)

Annual trend (% change/year), 2011-2021: 0.6% (95% CI: -3.4% to 5.2%)

Black-billed Cuckoo

Total percent change, 1970-2021: -68.8% (95% CI: -85.4% to -40.8%)

Annual trend (% change/year), 1970-2021: -2.3% (95% CI: -3.5% to -0.9%)

Total percent change, 2011-2021: -1.77% (95% CI: -37.5% to 50.2%)

Annual trend (% change/year), 2011-2021: -0.2% (95% CI: -4.2% to 4.4%)

Black-capped Chickadee

Total percent change, 1970-2021: 226% (95% CI: 98.5% to 405%)

Annual trend (% change/year), 1970-2021: 2.3% (95% CI: 1.4% to 3.3%)

Total percent change, 2011-2021: -4.92% (95% CI: -30.2% to 22.7%)

Annual trend (% change/year), 2011-2021: -0.5% (95% CI: -3.2% to 2.3%)

Black-crowned Night-Heron

Total percent change, 1970-2021: -97.9% (95% CI: -100% to -85.3%)

Annual trend (% change/year), 1970-2021: -7.3% (95% CI: -12% to -3%)

Total percent change, 2011-2021: -65.9% (95% CI: -97.4% to -11.2%)

Annual trend (% change/year), 2011-2021: -10.2% (95% CI: -23.2% to 0.9%)

Black Tern

Total percent change, 1970-2021: -96.8% (95% CI: -99.2% to -93.3%)

Annual trend (% change/year), 1970-2021: -6.5% (95% CI: -8.3% to -4.9%)

Total percent change, 2011-2021: -51.7% (95% CI: -75.2% to -22.5%)

Annual trend (% change/year), 2011-2021: -7% (95% CI: -12.1% to -2%)

Blue-gray Gnatcatcher

Total percent change, 1970-2021: 52.6% (95% CI: -52.7% to 335%)

Annual trend (% change/year), 1970-2021: 0.8% (95% CI: -0.8% to 3.2%)

Total percent change, 2011-2021: -16.1% (95% CI: -46.8% to 25.5%)

Annual trend (% change/year), 2011-2021: -1.7% (95% CI: -5.4% to 2.7%)

Blue-headed Vireo

Total percent change, 1970-2021: 411% (95% CI: -80.6% to 1750%)

Annual trend (% change/year), 1970-2021: 3.2% (95% CI: 0.5% to 6.6%)

Total percent change, 2011-2021: 11.2% (95% CI: -50% to 67.7%)

Annual trend (% change/year), 2011-2021: 1.1% (95% CI: -5.5% to 6%)

Blue-winged Teal

Total percent change, 1970-2021: -85% (95% CI: -94.7% to -69.7%)

Annual trend (% change/year), 1970-2021: -3.6% (95% CI: -5.2% to -2.2%)

Total percent change, 2011-2021: -32.9% (95% CI: -60.1% to -4.2%)

Annual trend (% change/year), 2011-2021: -3.9% (95% CI: -8.7% to -0.4%)

Blue-winged Warbler

Total percent change, 1970-2021: -1.01% (95% CI: -83.5% to 267%)

Annual trend (% change/year), 1970-2021: 0% (95% CI: -2.2% to 2.9%)

Total percent change, 2011-2021: -10.4% (95% CI: -49.4% to 59.1%)

Annual trend (% change/year), 2011-2021: -1.1% (95% CI: -5.8% to 5.4%)

Blue Jay

Total percent change, 1970-2021: 44.9% (95% CI: 0.177% to 105%)

Annual trend (% change/year), 1970-2021: 0.7% (95% CI: 0% to 1.4%)

Total percent change, 2011-2021: -4.39% (95% CI: -27.2% to 22.7%)

Annual trend (% change/year), 2011-2021: -0.4% (95% CI: -3% to 2.2%)

Brewer’s Blackbird

Total percent change, 1970-2021: -56.7% (95% CI: -78.8% to -30.5%)

Annual trend (% change/year), 1970-2021: -1.6% (95% CI: -2.8% to -0.5%)

Total percent change, 2011-2021: -28.6% (95% CI: -56.5% to -11.9%)

Annual trend (% change/year), 2011-2021: -3.3% (95% CI: -7.4% to -0.9%)

Broad-winged Hawk

Total percent change, 1970-2021: 148% (95% CI: -28.9% to 644%)

Annual trend (% change/year), 1970-2021: 1.8% (95% CI: 0.1% to 4.3%)

Total percent change, 2011-2021: 39.3% (95% CI: -14.8% to 147%)

Annual trend (% change/year), 2011-2021: 3.4% (95% CI: -1.1% to 9.8%)

Brown-headed Cowbird

Total percent change, 1970-2021: -50.5% (95% CI: -67.9% to -32.4%)

Annual trend (% change/year), 1970-2021: -1.4% (95% CI: -2.1% to -0.7%)

Total percent change, 2011-2021: -9.76% (95% CI: -34.8% to 14.3%)

Annual trend (% change/year), 2011-2021: -1% (95% CI: -4.1% to 1.4%)

Brown Thrasher

Total percent change, 1970-2021: -48.6% (95% CI: -63.9% to -31.2%)

Annual trend (% change/year), 1970-2021: -1.3% (95% CI: -2% to -0.7%)

Total percent change, 2011-2021: -17.3% (95% CI: -38.1% to -2.25%)

Annual trend (% change/year), 2011-2021: -1.9% (95% CI: -4.1% to 0.3%)

Canada Goose

Total percent change, 1970-2021: 73500% (95% CI: 18400% to 224000%)

Annual trend (% change/year), 1970-2021: 13.8% (95% CI: 11.7% to 16.6%)

Total percent change, 2011-2021: 2.31% (95% CI: -52.3% to 45.1%)

Annual trend (% change/year), 2011-2021: 0.2% (95% CI: -6.3% to 4.2%)

Caspian Tern

Total percent change, 1970-2021: 1.55% (95% CI: -99.3% to 248%)

Annual trend (% change/year), 1970-2021: 0% (95% CI: -3.9% to 3.3%)

Total percent change, 2011-2021: -43.8% (95% CI: -89.3% to -5.6%)

Annual trend (% change/year), 2011-2021: -5.6% (95% CI: -15.8% to 1%)

Cedar Waxwing

Total percent change, 1970-2021: 101% (95% CI: 12.1% to 195%)

Annual trend (% change/year), 1970-2021: 1.4% (95% CI: 0.4% to 2.2%)

Total percent change, 2011-2021: -33.4% (95% CI: -49.6% to -17.5%)

Annual trend (% change/year), 2011-2021: -4% (95% CI: -6.5% to -1.8%)

Cerulean Warbler

Total percent change, 1970-2021: -76.2% (95% CI: -100% to -14.1%)

Annual trend (% change/year), 1970-2021: -2.8% (95% CI: -7.3% to 0.8%)

Total percent change, 2011-2021: -1.14% (95% CI: -68.8% to 153%)

Annual trend (% change/year), 2011-2021: -0.1% (95% CI: -7.6% to 10.6%)

Chestnut-sided Warbler

Total percent change, 1970-2021: 218% (95% CI: -9.73% to 1020%)

Annual trend (% change/year), 1970-2021: 2.3% (95% CI: 0.2% to 5%)

Total percent change, 2011-2021: 2.72% (95% CI: -46.5% to 78.2%)

Annual trend (% change/year), 2011-2021: 0.3% (95% CI: -5.3% to 6.4%)

Chimney Swift

Total percent change, 1970-2021: -66.9% (95% CI: -76.4% to -55.4%)

Annual trend (% change/year), 1970-2021: -2.1% (95% CI: -2.7% to -1.5%)

Total percent change, 2011-2021: -20.9% (95% CI: -31.8% to -6.33%)

Annual trend (% change/year), 2011-2021: -2.3% (95% CI: -3.8% to -0.6%)

Chipping Sparrow

Total percent change, 1970-2021: -9.14% (95% CI: -28.7% to 14%)

Annual trend (% change/year), 1970-2021: -0.2% (95% CI: -0.7% to 0.3%)

Total percent change, 2011-2021: -27.3% (95% CI: -39.1% to -18.2%)

Annual trend (% change/year), 2011-2021: -3.1% (95% CI: -4.7% to -1.8%)

Clay-colored Sparrow

Total percent change, 1970-2021: -56.8% (95% CI: -74.7% to -36.4%)

Annual trend (% change/year), 1970-2021: -1.6% (95% CI: -2.6% to -0.9%)

Total percent change, 2011-2021: -34.5% (95% CI: -51.7% to -18.1%)

Annual trend (% change/year), 2011-2021: -4.1% (95% CI: -7% to -2%)

Cliff Swallow

Total percent change, 1970-2021: 743% (95% CI: 187% to 1760%)

Annual trend (% change/year), 1970-2021: 4.3% (95% CI: 2.5% to 6.1%)

Total percent change, 2011-2021: -23% (95% CI: -56.7% to 27%)

Annual trend (% change/year), 2011-2021: -2.6% (95% CI: -7.5% to 2.8%)

Common Grackle

Total percent change, 1970-2021: -79.9% (95% CI: -87.2% to -71.5%)

Annual trend (% change/year), 1970-2021: -3.1% (95% CI: -3.8% to -2.4%)

Total percent change, 2011-2021: -24.7% (95% CI: -43.1% to -1.44%)

Annual trend (% change/year), 2011-2021: -2.8% (95% CI: -5.4% to -0.1%)

Common Loon

Total percent change, 1970-2021: 118% (95% CI: 7.42% to 286%)

Annual trend (% change/year), 1970-2021: 1.5% (95% CI: 0.3% to 2.8%)

Total percent change, 2011-2021: -2.06% (95% CI: -35.5% to 31.3%)

Annual trend (% change/year), 2011-2021: -0.2% (95% CI: -3.5% to 3.3%)

Common Nighthawk

Total percent change, 1970-2021: -53.3% (95% CI: -87.9% to 29.7%)

Annual trend (% change/year), 1970-2021: -1.5% (95% CI: -3.3% to 0.8%)

Total percent change, 2011-2021: -0.0726% (95% CI: -44.4% to 49.8%)

Annual trend (% change/year), 2011-2021: 0% (95% CI: -5.4% to 4.4%)

Common Raven

Total percent change, 1970-2021: 11500% (95% CI: -41.6% to 258000%)

Annual trend (% change/year), 1970-2021: 9.8% (95% CI: 3.2% to 17.1%)

Total percent change, 2011-2021: 274% (95% CI: 3.97% to 981%)

Annual trend (% change/year), 2011-2021: 14.1% (95% CI: 1.8% to 27.6%)

Common Yellowthroat

Total percent change, 1970-2021: -24.8% (95% CI: -36.2% to -12.9%)

Annual trend (% change/year), 1970-2021: -0.6% (95% CI: -0.9% to -0.3%)

Total percent change, 2011-2021: -8.65% (95% CI: -18.4% to -0.542%)

Annual trend (% change/year), 2011-2021: -0.9% (95% CI: -2% to -0.1%)

Cooper’s Hawk

Total percent change, 1970-2021: 355% (95% CI: 22.4% to 1150%)

Annual trend (% change/year), 1970-2021: 3% (95% CI: 1.4% to 5.4%)

Total percent change, 2011-2021: -16.5% (95% CI: -56.7% to 16.3%)

Annual trend (% change/year), 2011-2021: -1.8% (95% CI: -7.5% to 1.9%)

Dickcissel

Total percent change, 1970-2021: -49.3% (95% CI: -89.3% to 30.3%)

Annual trend (% change/year), 1970-2021: -1.3% (95% CI: -3.4% to 0.9%)

Total percent change, 2011-2021: 176% (95% CI: -6.73% to 566%)

Annual trend (% change/year), 2011-2021: 10.7% (95% CI: 1% to 21.8%)

Double-crested Cormorant

Total percent change, 1970-2021: 1930% (95% CI: 454% to 4580%)

Annual trend (% change/year), 1970-2021: 6.1% (95% CI: 4% to 8.1%)

Total percent change, 2011-2021: -27.5% (95% CI: -60.2% to 5.25%)

Annual trend (% change/year), 2011-2021: -3.2% (95% CI: -7.6% to 1.2%)

Downy Woodpecker

Total percent change, 1970-2021: 49.7% (95% CI: -18% to 159%)

Annual trend (% change/year), 1970-2021: 0.8% (95% CI: -0.3% to 1.9%)

Total percent change, 2011-2021: -11.5% (95% CI: -35.2% to 13.9%)

Annual trend (% change/year), 2011-2021: -1.2% (95% CI: -4.1% to 1.4%)

Eastern Bluebird

Total percent change, 1970-2021: 150% (95% CI: 41.5% to 279%)

Annual trend (% change/year), 1970-2021: 1.8% (95% CI: 0.8% to 2.7%)

Total percent change, 2011-2021: -46.3% (95% CI: -67.2% to -26.1%)

Annual trend (% change/year), 2011-2021: -6% (95% CI: -9.9% to -2.4%)

Eastern Kingbird

Total percent change, 1970-2021: -60% (95% CI: -73.7% to -44.7%)

Annual trend (% change/year), 1970-2021: -1.8% (95% CI: -2.5% to -1.1%)

Total percent change, 2011-2021: -12.9% (95% CI: -30.2% to 1.98%)

Annual trend (% change/year), 2011-2021: -1.4% (95% CI: -3.5% to 0.2%)

Eastern Meadowlark

Total percent change, 1970-2021: -61.5% (95% CI: -78.7% to -38.7%)

Annual trend (% change/year), 1970-2021: -1.9% (95% CI: -2.8% to -0.9%)

Total percent change, 2011-2021: -36.9% (95% CI: -55% to -16.1%)

Annual trend (% change/year), 2011-2021: -4.5% (95% CI: -7.7% to -1.7%)

Eastern Phoebe

Total percent change, 1970-2021: -1.73% (95% CI: -36.3% to 47.1%)

Annual trend (% change/year), 1970-2021: 0% (95% CI: -0.9% to 0.8%)

Total percent change, 2011-2021: -29.1% (95% CI: -52.2% to -13.2%)

Annual trend (% change/year), 2011-2021: -3.4% (95% CI: -6.9% to -1.2%)

Eastern Towhee

Total percent change, 1970-2021: -25.9% (95% CI: -61.3% to 47.9%)

Annual trend (% change/year), 1970-2021: -0.6% (95% CI: -1.8% to 0.8%)

Total percent change, 2011-2021: -9.74% (95% CI: -34.3% to 30.4%)

Annual trend (% change/year), 2011-2021: -1% (95% CI: -3.8% to 3%)

Eastern Whip-poor-will

Total percent change, 1970-2021: -75.9% (95% CI: -100% to 77.9%)

Annual trend (% change/year), 1970-2021: -2.8% (95% CI: -7.2% to 2.4%)

Total percent change, 2011-2021: -26% (95% CI: -99.6% to 27.2%)

Annual trend (% change/year), 2011-2021: -3% (95% CI: -20.1% to 5.2%)

Eastern Wood-Pewee

Total percent change, 1970-2021: 4.39% (95% CI: -23.2% to 38.1%)

Annual trend (% change/year), 1970-2021: 0.1% (95% CI: -0.5% to 0.6%)

Total percent change, 2011-2021: 3.08% (95% CI: -16.8% to 21.4%)

Annual trend (% change/year), 2011-2021: 0.3% (95% CI: -1.7% to 2%)

Eurasian Collared-Dove

Total percent change, 1970-2021: % (95% CI: % to %)

Annual trend (% change/year), 1970-2021: % (95% CI: % to %)

Total percent change, 2011-2021: 105% (95% CI: -53.1% to 303%)

Annual trend (% change/year), 2011-2021: 7.5% (95% CI: -1.6% to 17.5%)

European Starling

Total percent change, 1970-2021: -62.5% (95% CI: -74.6% to -48.2%)

Annual trend (% change/year), 1970-2021: -1.9% (95% CI: -2.6% to -1.3%)

Total percent change, 2011-2021: -20.5% (95% CI: -35.8% to -7.38%)

Annual trend (% change/year), 2011-2021: -2.3% (95% CI: -4.3% to -0.7%)

Field Sparrow

Total percent change, 1970-2021: -68% (95% CI: -81.5% to -52%)

Annual trend (% change/year), 1970-2021: -2.2% (95% CI: -3% to -1.3%)

Total percent change, 2011-2021: -26.8% (95% CI: -45.8% to -5.93%)

Annual trend (% change/year), 2011-2021: -3.1% (95% CI: -5.7% to -0.4%)

Forster’s Tern

Total percent change, 1970-2021: 105% (95% CI: -81.3% to 1500%)

Annual trend (% change/year), 1970-2021: 1.4% (95% CI: -1.8% to 6.2%)

Total percent change, 2011-2021: -14.8% (95% CI: -70.5% to 103%)

Annual trend (% change/year), 2011-2021: -1.6% (95% CI: -7.9% to 9.3%)

Franklin’s Gull

Total percent change, 1970-2021: -68.8% (95% CI: -100% to 61%)

Annual trend (% change/year), 1970-2021: -2.3% (95% CI: -8% to 2.3%)

Total percent change, 2011-2021: 35.1% (95% CI: -84% to 176%)

Annual trend (% change/year), 2011-2021: 3.1% (95% CI: -10.8% to 12.7%)

Gadwall

Total percent change, 1970-2021: -56.2% (95% CI: -100% to 285%)

Annual trend (% change/year), 1970-2021: -1.6% (95% CI: -11.5% to 4.3%)

Total percent change, 2011-2021: -55.2% (95% CI: -100% to 6.52%)

Annual trend (% change/year), 2011-2021: -7.7% (95% CI: -33.2% to 2.8%)

Golden-winged Warbler

Total percent change, 1970-2021: 24.8% (95% CI: -95.1% to 409%)

Annual trend (% change/year), 1970-2021: 0.4% (95% CI: -3.1% to 3.5%)

Total percent change, 2011-2021: -22.4% (95% CI: -82.2% to 72%)

Annual trend (% change/year), 2011-2021: -2.5% (95% CI: -12% to 7.4%)

Grasshopper Sparrow

Total percent change, 1970-2021: -98.2% (95% CI: -99.5% to -96.1%)

Annual trend (% change/year), 1970-2021: -7.6% (95% CI: -9.2% to -6%)

Total percent change, 2011-2021: -58.4% (95% CI: -78.1% to -35.8%)

Annual trend (% change/year), 2011-2021: -8.4% (95% CI: -13.2% to -3.8%)

Gray Catbird

Total percent change, 1970-2021: 6.77% (95% CI: -15.7% to 30%)

Annual trend (% change/year), 1970-2021: 0.1% (95% CI: -0.3% to 0.5%)

Total percent change, 2011-2021: -2.91% (95% CI: -16.6% to 8.52%)

Annual trend (% change/year), 2011-2021: -0.3% (95% CI: -1.7% to 0.9%)

Gray Partridge

Total percent change, 1970-2021: -3.89% (95% CI: -99% to 201%)

Annual trend (% change/year), 1970-2021: -0.1% (95% CI: -4% to 3.1%)

Total percent change, 2011-2021: -10.5% (95% CI: -85.9% to 58.4%)

Annual trend (% change/year), 2011-2021: -1.1% (95% CI: -13.4% to 6.3%)

Great Blue Heron

Total percent change, 1970-2021: -62.8% (95% CI: -80.3% to -43.2%)

Annual trend (% change/year), 1970-2021: -1.9% (95% CI: -2.8% to -0.9%)

Total percent change, 2011-2021: -11% (95% CI: -38.5% to 23.7%)

Annual trend (% change/year), 2011-2021: -1.2% (95% CI: -4.5% to 2.3%)

Great Crested Flycatcher

Total percent change, 1970-2021: 11.6% (95% CI: -16.9% to 44.8%)

Annual trend (% change/year), 1970-2021: 0.2% (95% CI: -0.3% to 0.7%)

Total percent change, 2011-2021: 3.04% (95% CI: -23.5% to 19.1%)

Annual trend (% change/year), 2011-2021: 0.3% (95% CI: -2.6% to 1.8%)

Great Egret

Total percent change, 1970-2021: 263% (95% CI: -17.6% to 782%)

Annual trend (% change/year), 1970-2021: 2.6% (95% CI: 0.4% to 4.8%)

Total percent change, 2011-2021: -26.4% (95% CI: -62.9% to 20.3%)

Annual trend (% change/year), 2011-2021: -3% (95% CI: -8.3% to 2.7%)

Great Horned Owl

Total percent change, 1970-2021: -8.66% (95% CI: -75.3% to 80.9%)

Annual trend (% change/year), 1970-2021: -0.2% (95% CI: -2.1% to 1.4%)

Total percent change, 2011-2021: -10.3% (95% CI: -57.5% to 21.2%)

Annual trend (% change/year), 2011-2021: -1.1% (95% CI: -6.7% to 2.7%)

Green-winged Teal

Total percent change, 1970-2021: -64% (95% CI: -99.9% to 11.8%)

Annual trend (% change/year), 1970-2021: -2% (95% CI: -6.5% to 0.7%)

Total percent change, 2011-2021: -11.1% (95% CI: -69.5% to 58.6%)

Annual trend (% change/year), 2011-2021: -1.2% (95% CI: -10.2% to 5.4%)

Green Heron

Total percent change, 1970-2021: -10.3% (95% CI: -55.5% to 50%)

Annual trend (% change/year), 1970-2021: -0.2% (95% CI: -1.3% to 0.9%)

Total percent change, 2011-2021: -12.4% (95% CI: -38.2% to 16.2%)

Annual trend (% change/year), 2011-2021: -1.3% (95% CI: -4.3% to 1.8%)

Hairy Woodpecker

Total percent change, 1970-2021: 43.1% (95% CI: -24.5% to 133%)

Annual trend (% change/year), 1970-2021: 0.7% (95% CI: -0.3% to 1.8%)

Total percent change, 2011-2021: 4.72% (95% CI: -21.2% to 44.1%)

Annual trend (% change/year), 2011-2021: 0.5% (95% CI: -1.7% to 4.2%)

Henslow’s Sparrow

Total percent change, 1970-2021: -84.1% (95% CI: -99.8% to -42.9%)

Annual trend (% change/year), 1970-2021: -3.5% (95% CI: -7% to -0.6%)

Total percent change, 2011-2021: -46.2% (95% CI: -79% to -2.28%)

Annual trend (% change/year), 2011-2021: -6% (95% CI: -12.7% to 0.4%)

Hooded Merganser

Total percent change, 1970-2021: 1660% (95% CI: 57% to 10700%)

Annual trend (% change/year), 1970-2021: 5.8% (95% CI: 2.9% to 10%)

Total percent change, 2011-2021: 5.46% (95% CI: -72.1% to 76.6%)

Annual trend (% change/year), 2011-2021: 0.5% (95% CI: -9% to 7.1%)

Horned Lark

Total percent change, 1970-2021: -37% (95% CI: -61.6% to -7.51%)

Annual trend (% change/year), 1970-2021: -0.9% (95% CI: -1.7% to -0.1%)

Total percent change, 2011-2021: -10.2% (95% CI: -33.9% to 14.6%)

Annual trend (% change/year), 2011-2021: -1.1% (95% CI: -3.5% to 1.7%)

House Finch

Total percent change, 1970-2021: 7640000% (95% CI: 28900% to 5.77e+08%)

Annual trend (% change/year), 1970-2021: 24.7% (95% CI: 16.6% to 36.6%)

Total percent change, 2011-2021: -36.4% (95% CI: -69.6% to 12.3%)

Annual trend (% change/year), 2011-2021: -4.4% (95% CI: -10.3% to 1.9%)

House Sparrow

Total percent change, 1970-2021: -84.5% (95% CI: -89.6% to -77.5%)

Annual trend (% change/year), 1970-2021: -3.6% (95% CI: -4.3% to -2.8%)

Total percent change, 2011-2021: -26.4% (95% CI: -44.8% to -1.95%)

Annual trend (% change/year), 2011-2021: -3% (95% CI: -5.7% to -0.1%)

House Wren

Total percent change, 1970-2021: 32.8% (95% CI: 2.17% to 61.5%)

Annual trend (% change/year), 1970-2021: 0.6% (95% CI: 0.1% to 1%)

Total percent change, 2011-2021: 13.2% (95% CI: -6.94% to 29.8%)

Annual trend (% change/year), 2011-2021: 1.2% (95% CI: -0.6% to 2.8%)

Indigo Bunting

Total percent change, 1970-2021: -15% (95% CI: -40.6% to 18%)

Annual trend (% change/year), 1970-2021: -0.3% (95% CI: -1% to 0.3%)

Total percent change, 2011-2021: 1.42% (95% CI: -26.7% to 34.6%)

Annual trend (% change/year), 2011-2021: 0.1% (95% CI: -2.9% to 3.2%)

Killdeer

Total percent change, 1970-2021: -46% (95% CI: -59.1% to -33.4%)

Annual trend (% change/year), 1970-2021: -1.2% (95% CI: -1.7% to -0.8%)

Total percent change, 2011-2021: -22.5% (95% CI: -32.5% to -11.7%)

Annual trend (% change/year), 2011-2021: -2.5% (95% CI: -3.7% to -1.1%)

Lark Sparrow

Total percent change, 1970-2021: 136% (95% CI: -79.6% to 1720%)

Annual trend (% change/year), 1970-2021: 1.7% (95% CI: -1.7% to 6%)

Total percent change, 2011-2021: -0.673% (95% CI: -53.2% to 123%)

Annual trend (% change/year), 2011-2021: -0.1% (95% CI: -5.7% to 9.4%)

Least Bittern

Total percent change, 1970-2021: -41.6% (95% CI: -100% to 78.3%)

Annual trend (% change/year), 1970-2021: -1% (95% CI: -6.1% to 2.1%)

Total percent change, 2011-2021: -13.5% (95% CI: -83.6% to 36.4%)

Annual trend (% change/year), 2011-2021: -1.4% (95% CI: -13.7% to 4%)

Least Flycatcher

Total percent change, 1970-2021: -48.2% (95% CI: -71.1% to -22.2%)

Annual trend (% change/year), 1970-2021: -1.3% (95% CI: -2.2% to -0.4%)

Total percent change, 2011-2021: -15.7% (95% CI: -49.8% to 7.33%)

Annual trend (% change/year), 2011-2021: -1.7% (95% CI: -6% to 1.2%)

LeConte’s Sparrow

Total percent change, 1970-2021: -58.2% (95% CI: -98% to 18.1%)

Annual trend (% change/year), 1970-2021: -1.7% (95% CI: -5.2% to 0.8%)

Total percent change, 2011-2021: -60.9% (95% CI: -85.8% to -33.2%)

Annual trend (% change/year), 2011-2021: -9% (95% CI: -16.4% to -3.4%)

Lesser Scaup

Total percent change, 1970-2021: -1.9% (95% CI: -99.1% to 384%)

Annual trend (% change/year), 1970-2021: 0% (95% CI: -3.6% to 3.9%)

Total percent change, 2011-2021: 4.04% (95% CI: -59.6% to 229%)

Annual trend (% change/year), 2011-2021: 0.4% (95% CI: -6.3% to 13.6%)

Loggerhead Shrike

Total percent change, 1970-2021: -91.2% (95% CI: -99.9% to -74.6%)

Annual trend (% change/year), 1970-2021: -4.7% (95% CI: -8.8% to -1.9%)

Total percent change, 2011-2021: -23.6% (95% CI: -71.1% to 83.8%)

Annual trend (% change/year), 2011-2021: -2.6% (95% CI: -9.5% to 7.4%)

Mallard

Total percent change, 1970-2021: -5.97% (95% CI: -56.8% to 64.6%)

Annual trend (% change/year), 1970-2021: -0.1% (95% CI: -1.4% to 1.1%)

Total percent change, 2011-2021: -25.7% (95% CI: -49.5% to -0.137%)

Annual trend (% change/year), 2011-2021: -2.9% (95% CI: -5.9% to 0.5%)

Marsh Wren

Total percent change, 1970-2021: -45.9% (95% CI: -85.5% to 18.7%)

Annual trend (% change/year), 1970-2021: -1.2% (95% CI: -2.9% to 0.7%)

Total percent change, 2011-2021: 19.3% (95% CI: -28.9% to 89.7%)

Annual trend (% change/year), 2011-2021: 1.8% (95% CI: -3.4% to 6.6%)

Mourning Dove

Total percent change, 1970-2021: -61.1% (95% CI: -70.3% to -51.7%)

Annual trend (% change/year), 1970-2021: -1.8% (95% CI: -2.3% to -1.4%)

Total percent change, 2011-2021: -14.3% (95% CI: -29.4% to -0.509%)

Annual trend (% change/year), 2011-2021: -1.5% (95% CI: -3.3% to 0.1%)

Mourning Warbler

Total percent change, 1970-2021: -76.3% (95% CI: -94.4% to -42.6%)

Annual trend (% change/year), 1970-2021: -2.8% (95% CI: -4.8% to -0.8%)

Total percent change, 2011-2021: -31.8% (95% CI: -73.3% to 6.81%)

Annual trend (% change/year), 2011-2021: -3.8% (95% CI: -10.9% to 1.4%)

Nashville Warbler

Total percent change, 1970-2021: -81.5% (95% CI: -97.8% to -46.7%)

Annual trend (% change/year), 1970-2021: -3.2% (95% CI: -5.6% to -0.6%)

Total percent change, 2011-2021: -31.3% (95% CI: -67.7% to 20.9%)

Annual trend (% change/year), 2011-2021: -3.7% (95% CI: -10.1% to 2.2%)

Northern Bobwhite

Total percent change, 1970-2021: -91.2% (95% CI: -99.4% to -62.5%)

Annual trend (% change/year), 1970-2021: -4.7% (95% CI: -7.1% to -1.4%)

Total percent change, 2011-2021: -33.2% (95% CI: -67.6% to 24.4%)

Annual trend (% change/year), 2011-2021: -4% (95% CI: -9.9% to 2.7%)

Northern Cardinal

Total percent change, 1970-2021: 334% (95% CI: 179% to 531%)

Annual trend (% change/year), 1970-2021: 2.9% (95% CI: 2.2% to 3.8%)

Total percent change, 2011-2021: 20.4% (95% CI: -10.3% to 67.7%)

Annual trend (% change/year), 2011-2021: 1.9% (95% CI: -0.8% to 5.5%)

Northern Flicker (all forms)

Total percent change, 1970-2021: % (95% CI: % to %)

Annual trend (% change/year), 1970-2021: % (95% CI: % to %)

Total percent change, 2011-2021: % (95% CI: % to %)

Annual trend (% change/year), 2011-2021: % (95% CI: % to %)

Northern Flicker

Total percent change, 1970-2021: -75.8% (95% CI: -85% to -64.6%)

Annual trend (% change/year), 1970-2021: -2.8% (95% CI: -3.6% to -2%)

Total percent change, 2011-2021: -16.9% (95% CI: -46.2% to 15.7%)

Annual trend (% change/year), 2011-2021: -1.8% (95% CI: -5.7% to 1.7%)

Northern Harrier

Total percent change, 1970-2021: -27.4% (95% CI: -68.1% to 25.3%)

Annual trend (% change/year), 1970-2021: -0.6% (95% CI: -1.9% to 0.6%)

Total percent change, 2011-2021: -12.8% (95% CI: -42.2% to 31.4%)

Annual trend (% change/year), 2011-2021: -1.4% (95% CI: -5% to 3%)

Northern Rough-winged Swallow

Total percent change, 1970-2021: -62.6% (95% CI: -88% to -22.7%)

Annual trend (% change/year), 1970-2021: -1.9% (95% CI: -3.6% to -0.3%)

Total percent change, 2011-2021: -19% (95% CI: -48.9% to 18.4%)

Annual trend (% change/year), 2011-2021: -2.1% (95% CI: -6.5% to 1.7%)

Northern Shoveler

Total percent change, 1970-2021: 30.7% (95% CI: -97.3% to 307%)

Annual trend (% change/year), 1970-2021: 0.5% (95% CI: -1.9% to 3.5%)

Total percent change, 2011-2021: -24.2% (95% CI: -64.6% to 25.2%)

Annual trend (% change/year), 2011-2021: -2.7% (95% CI: -8.7% to 3.2%)

Olive-sided Flycatcher

Total percent change, 1970-2021: 45.9% (95% CI: -96.3% to 2810%)

Annual trend (% change/year), 1970-2021: 0.7% (95% CI: -3.6% to 7.3%)

Total percent change, 2011-2021: -1.74% (95% CI: -81.1% to 166%)

Annual trend (% change/year), 2011-2021: -0.2% (95% CI: -9.8% to 12.4%)

Orchard Oriole

Total percent change, 1970-2021: 386% (95% CI: -33.8% to 2720%)

Annual trend (% change/year), 1970-2021: 3.1% (95% CI: -0.1% to 7.2%)

Total percent change, 2011-2021: -1.35% (95% CI: -52.3% to 114%)

Annual trend (% change/year), 2011-2021: -0.1% (95% CI: -6.5% to 8.5%)

Osprey

Total percent change, 1970-2021: 2660% (95% CI: 84.3% to 29800%)

Annual trend (% change/year), 1970-2021: 6.7% (95% CI: 3.8% to 12.2%)

Total percent change, 2011-2021: 30.9% (95% CI: -47.1% to 132%)

Annual trend (% change/year), 2011-2021: 2.7% (95% CI: -4.1% to 9.9%)

Ovenbird

Total percent change, 1970-2021: 154% (95% CI: 64.3% to 280%)

Annual trend (% change/year), 1970-2021: 1.8% (95% CI: 1% to 2.7%)

Total percent change, 2011-2021: -0.361% (95% CI: -22.6% to 25.2%)

Annual trend (% change/year), 2011-2021: 0% (95% CI: -2.3% to 2.5%)

Pied-billed Grebe

Total percent change, 1970-2021: -72.4% (95% CI: -92.6% to -39.7%)

Annual trend (% change/year), 1970-2021: -2.5% (95% CI: -4.4% to -0.7%)

Total percent change, 2011-2021: -36% (95% CI: -64.9% to 4.78%)

Annual trend (% change/year), 2011-2021: -4.4% (95% CI: -9.8% to 0.6%)

Pileated Woodpecker

Total percent change, 1970-2021: 443% (95% CI: 172% to 914%)

Annual trend (% change/year), 1970-2021: 3.4% (95% CI: 2.1% to 4.7%)

Total percent change, 2011-2021: 65.6% (95% CI: 4.45% to 187%)

Annual trend (% change/year), 2011-2021: 5.2% (95% CI: 1% to 11.4%)

Pine Warbler

Total percent change, 1970-2021: 276% (95% CI: 26.8% to 745%)

Annual trend (% change/year), 1970-2021: 2.6% (95% CI: 1.3% to 4.6%)

Total percent change, 2011-2021: 6.98% (95% CI: -27.2% to 50.4%)

Annual trend (% change/year), 2011-2021: 0.7% (95% CI: -2.9% to 4.3%)

Purple Finch

Total percent change, 1970-2021: 22.9% (95% CI: -81.7% to 547%)

Annual trend (% change/year), 1970-2021: 0.4% (95% CI: -2.2% to 4%)

Total percent change, 2011-2021: 18.8% (95% CI: -46.6% to 193%)

Annual trend (% change/year), 2011-2021: 1.7% (95% CI: -4% to 12.4%)

Purple Martin

Total percent change, 1970-2021: -76.4% (95% CI: -91.1% to -51%)

Annual trend (% change/year), 1970-2021: -2.8% (95% CI: -4.2% to -1.2%)

Total percent change, 2011-2021: 54.2% (95% CI: -25.4% to 200%)

Annual trend (% change/year), 2011-2021: 4.4% (95% CI: -1.7% to 12.3%)

Red-bellied Woodpecker

Total percent change, 1970-2021: 711% (95% CI: 354% to 1180%)

Annual trend (% change/year), 1970-2021: 4.2% (95% CI: 3.2% to 5.3%)

Total percent change, 2011-2021: 12.2% (95% CI: -17.9% to 47.9%)

Annual trend (% change/year), 2011-2021: 1.2% (95% CI: -2% to 4%)

Red-breasted Nuthatch

Total percent change, 1970-2021: 1790% (95% CI: 322% to 6290%)

Annual trend (% change/year), 1970-2021: 5.9% (95% CI: 3.2% to 8.7%)

Total percent change, 2011-2021: 59.8% (95% CI: -21.6% to 163%)

Annual trend (% change/year), 2011-2021: 4.8% (95% CI: -1.3% to 10.7%)

Red-eyed Vireo

Total percent change, 1970-2021: 101% (95% CI: 42.5% to 169%)

Annual trend (% change/year), 1970-2021: 1.4% (95% CI: 0.7% to 2%)

Total percent change, 2011-2021: -9.45% (95% CI: -30% to 10.6%)

Annual trend (% change/year), 2011-2021: -1% (95% CI: -3.3% to 1.2%)

Red-headed Woodpecker

Total percent change, 1970-2021: -95% (95% CI: -97.9% to -91.1%)

Annual trend (% change/year), 1970-2021: -5.7% (95% CI: -7% to -4.5%)

Total percent change, 2011-2021: -44.3% (95% CI: -73.6% to -13.1%)

Annual trend (% change/year), 2011-2021: -5.7% (95% CI: -11.1% to -0.7%)

Red-necked Grebe

Total percent change, 1970-2021: 24.6% (95% CI: -99% to 1040%)

Annual trend (% change/year), 1970-2021: 0.4% (95% CI: -3.5% to 5.9%)

Total percent change, 2011-2021: -32.2% (95% CI: -96.9% to 12%)

Annual trend (% change/year), 2011-2021: -3.8% (95% CI: -18.6% to 3.8%)

Red-shouldered Hawk

Total percent change, 1970-2021: 686% (95% CI: 50.4% to 3160%)

Annual trend (% change/year), 1970-2021: 4.1% (95% CI: 1.8% to 7.3%)

Total percent change, 2011-2021: 46.2% (95% CI: -27.9% to 176%)

Annual trend (% change/year), 2011-2021: 3.9% (95% CI: -1.4% to 11.4%)

Red-tailed Hawk (all forms)

Total percent change, 1970-2021: % (95% CI: % to %)

Annual trend (% change/year), 1970-2021: % (95% CI: % to %)

Total percent change, 2011-2021: % (95% CI: % to %)

Annual trend (% change/year), 2011-2021: % (95% CI: % to %)

Red-tailed Hawk

Total percent change, 1970-2021: 182% (95% CI: 91.5% to 328%)

Annual trend (% change/year), 1970-2021: 2% (95% CI: 1.3% to 2.9%)

Total percent change, 2011-2021: 2.95% (95% CI: -21.1% to 21.3%)

Annual trend (% change/year), 2011-2021: 0.3% (95% CI: -2% to 2.2%)

Red-winged Blackbird

Total percent change, 1970-2021: -52.8% (95% CI: -63.3% to -40.1%)

Annual trend (% change/year), 1970-2021: -1.5% (95% CI: -1.9% to -1%)

Total percent change, 2011-2021: -2.25% (95% CI: -16.2% to 15.9%)

Annual trend (% change/year), 2011-2021: -0.2% (95% CI: -1.6% to 1.6%)

Redhead

Total percent change, 1970-2021: -42.1% (95% CI: -100% to 64.2%)

Annual trend (% change/year), 1970-2021: -1.1% (95% CI: -6.3% to 1.7%)

Total percent change, 2011-2021: -25.3% (95% CI: -83.1% to 21.4%)

Annual trend (% change/year), 2011-2021: -2.9% (95% CI: -12.9% to 3.6%)

Ring-billed Gull

Total percent change, 1970-2021: 365% (95% CI: -62.1% to 2400%)

Annual trend (% change/year), 1970-2021: 3.1% (95% CI: 0.5% to 7.3%)

Total percent change, 2011-2021: -57.2% (95% CI: -86.1% to -26.5%)

Annual trend (% change/year), 2011-2021: -8.1% (95% CI: -17.1% to -2.7%)

Ring-necked Duck

Total percent change, 1970-2021: 125% (95% CI: -73.8% to 506%)

Annual trend (% change/year), 1970-2021: 1.6% (95% CI: -1.3% to 4%)

Total percent change, 2011-2021: 9.45% (95% CI: -54.2% to 79.3%)

Annual trend (% change/year), 2011-2021: 0.9% (95% CI: -5% to 7.2%)

Ring-necked Pheasant

Total percent change, 1970-2021: -41.9% (95% CI: -66.8% to -6.98%)

Annual trend (% change/year), 1970-2021: -1.1% (95% CI: -2% to 0%)

Total percent change, 2011-2021: -30.6% (95% CI: -52.4% to -3.52%)

Annual trend (% change/year), 2011-2021: -3.6% (95% CI: -6.9% to -0.1%)

Rock Pigeon

Total percent change, 1970-2021: 2.92% (95% CI: -40.9% to 74.1%)

Annual trend (% change/year), 1970-2021: 0.1% (95% CI: -0.8% to 1.2%)

Total percent change, 2011-2021: 3.74% (95% CI: -18.7% to 45.3%)

Annual trend (% change/year), 2011-2021: 0.4% (95% CI: -2% to 3.8%)

Rose-breasted Grosbeak

Total percent change, 1970-2021: 17.9% (95% CI: -16.4% to 56.3%)

Annual trend (% change/year), 1970-2021: 0.3% (95% CI: -0.3% to 0.9%)

Total percent change, 2011-2021: 7.63% (95% CI: -12.5% to 31.7%)

Annual trend (% change/year), 2011-2021: 0.7% (95% CI: -0.9% to 3.1%)

Ruby-throated Hummingbird

Total percent change, 1970-2021: 167% (95% CI: 10.8% to 475%)

Annual trend (% change/year), 1970-2021: 1.9% (95% CI: 0.5% to 3.6%)

Total percent change, 2011-2021: -0.776% (95% CI: -32.4% to 46.7%)

Annual trend (% change/year), 2011-2021: -0.1% (95% CI: -3.5% to 4.2%)

Ruddy Duck

Total percent change, 1970-2021: -12.7% (95% CI: -99.1% to 122%)

Annual trend (% change/year), 1970-2021: -0.3% (95% CI: -4.3% to 2.4%)

Total percent change, 2011-2021: -2.67% (95% CI: -73.2% to 61.7%)

Annual trend (% change/year), 2011-2021: -0.3% (95% CI: -8% to 7.5%)

Ruffed Grouse

Total percent change, 1970-2021: -39.6% (95% CI: -93.6% to 20.7%)

Annual trend (% change/year), 1970-2021: -1% (95% CI: -3.4% to 1%)

Total percent change, 2011-2021: 0.477% (95% CI: -47.8% to 58.2%)

Annual trend (% change/year), 2011-2021: 0% (95% CI: -5.2% to 5.6%)

Sandhill Crane

Total percent change, 1970-2021: 1730000% (95% CI: 9320% to 3.8e+07%)

Annual trend (% change/year), 1970-2021: 21.1% (95% CI: 13.3% to 29.5%)

Total percent change, 2011-2021: 97.3% (95% CI: -12.8% to 248%)

Annual trend (% change/year), 2011-2021: 7% (95% CI: -0.1% to 14%)

Savannah Sparrow

Total percent change, 1970-2021: -87.7% (95% CI: -92.6% to -81.8%)

Annual trend (% change/year), 1970-2021: -4% (95% CI: -4.8% to -3.2%)

Total percent change, 2011-2021: -63.9% (95% CI: -76.8% to -45.9%)

Annual trend (% change/year), 2011-2021: -9.7% (95% CI: -13.1% to -5.6%)

Scarlet Tanager

Total percent change, 1970-2021: 34.5% (95% CI: -21.1% to 147%)

Annual trend (% change/year), 1970-2021: 0.6% (95% CI: -0.4% to 1.8%)

Total percent change, 2011-2021: -7.22% (95% CI: -31.1% to 34.2%)

Annual trend (% change/year), 2011-2021: -0.7% (95% CI: -3.6% to 3%)

Sedge Wren

Total percent change, 1970-2021: -44.3% (95% CI: -73.7% to -9.41%)

Annual trend (% change/year), 1970-2021: -1.1% (95% CI: -2.3% to 0%)

Total percent change, 2011-2021: -11.6% (95% CI: -40.3% to 24.8%)

Annual trend (% change/year), 2011-2021: -1.2% (95% CI: -4.5% to 2.6%)

Sharp-shinned Hawk

Total percent change, 1970-2021: 41% (95% CI: -85.9% to 272%)

Annual trend (% change/year), 1970-2021: 0.7% (95% CI: -2.1% to 3.1%)

Total percent change, 2011-2021: -30.3% (95% CI: -71% to 4.54%)

Annual trend (% change/year), 2011-2021: -3.5% (95% CI: -10% to 1.5%)

Song Sparrow

Total percent change, 1970-2021: -15.6% (95% CI: -36.9% to 6.72%)

Annual trend (% change/year), 1970-2021: -0.3% (95% CI: -0.9% to 0.1%)

Total percent change, 2011-2021: -17.5% (95% CI: -34.8% to 0.49%)

Annual trend (% change/year), 2011-2021: -1.9% (95% CI: -4.1% to 0.1%)

Sora

Total percent change, 1970-2021: -47.3% (95% CI: -79.3% to 6.32%)

Annual trend (% change/year), 1970-2021: -1.2% (95% CI: -2.7% to 0.3%)

Total percent change, 2011-2021: -21.1% (95% CI: -54.5% to 15.4%)

Annual trend (% change/year), 2011-2021: -2.3% (95% CI: -7.2% to 1.8%)

Spotted Sandpiper

Total percent change, 1970-2021: -66.4% (95% CI: -93.6% to -39.6%)

Annual trend (% change/year), 1970-2021: -2.1% (95% CI: -4.2% to -0.6%)

Total percent change, 2011-2021: -8.98% (95% CI: -45.9% to 35.8%)

Annual trend (% change/year), 2011-2021: -0.9% (95% CI: -5.4% to 3.4%)

Swamp Sparrow

Total percent change, 1970-2021: 218% (95% CI: 88.1% to 415%)

Annual trend (% change/year), 1970-2021: 2.3% (95% CI: 1.4% to 3.4%)

Total percent change, 2011-2021: 10.8% (95% CI: -21.2% to 42.6%)

Annual trend (% change/year), 2011-2021: 1% (95% CI: -2.2% to 3.8%)

Tree Swallow

Total percent change, 1970-2021: 150% (95% CI: 61.1% to 283%)

Annual trend (% change/year), 1970-2021: 1.8% (95% CI: 1% to 2.7%)

Total percent change, 2011-2021: -19.8% (95% CI: -41.6% to 1.32%)

Annual trend (% change/year), 2011-2021: -2.2% (95% CI: -5.2% to 0.1%)

Trumpeter Swan

Total percent change, 1970-2021: 60100% (95% CI: 2720% to 985000%)

Annual trend (% change/year), 1970-2021: 13.4% (95% CI: 8.6% to 20.1%)

Total percent change, 2011-2021: 228% (95% CI: 2.41% to 514%)

Annual trend (% change/year), 2011-2021: 12.6% (95% CI: 3% to 21.8%)

Tufted Titmouse

Total percent change, 1970-2021: 34.3% (95% CI: -90.7% to 353%)

Annual trend (% change/year), 1970-2021: 0.6% (95% CI: -2.7% to 3.7%)

Total percent change, 2011-2021: 25.3% (95% CI: -46.5% to 303%)

Annual trend (% change/year), 2011-2021: 2.3% (95% CI: -3.4% to 16.1%)

Turkey Vulture

Total percent change, 1970-2021: 4230% (95% CI: 786% to 12500%)

Annual trend (% change/year), 1970-2021: 7.7% (95% CI: 5% to 10.1%)

Total percent change, 2011-2021: 158% (95% CI: 22.9% to 418%)

Annual trend (% change/year), 2011-2021: 9.9% (95% CI: 3.3% to 18.7%)

Upland Sandpiper

Total percent change, 1970-2021: -59.7% (95% CI: -92.1% to -13.9%)

Annual trend (% change/year), 1970-2021: -1.8% (95% CI: -3.9% to 0.2%)

Total percent change, 2011-2021: -34.3% (95% CI: -65.2% to -8.81%)

Annual trend (% change/year), 2011-2021: -4.1% (95% CI: -9.5% to -0.5%)

Veery

Total percent change, 1970-2021: 133% (95% CI: 36.1% to 256%)

Annual trend (% change/year), 1970-2021: 1.7% (95% CI: 0.6% to 2.5%)

Total percent change, 2011-2021: 42.2% (95% CI: 3.41% to 91.4%)

Annual trend (% change/year), 2011-2021: 3.6% (95% CI: 0.5% to 6.8%)

Vesper Sparrow

Total percent change, 1970-2021: -81.4% (95% CI: -88.2% to -73.9%)

Annual trend (% change/year), 1970-2021: -3.2% (95% CI: -4% to -2.5%)

Total percent change, 2011-2021: -19.3% (95% CI: -43.7% to 2.57%)

Annual trend (% change/year), 2011-2021: -2.1% (95% CI: -5.3% to 0.5%)

Virginia Rail

Total percent change, 1970-2021: -42.9% (95% CI: -96.8% to 55.7%)

Annual trend (% change/year), 1970-2021: -1.1% (95% CI: -4.2% to 1.4%)

Total percent change, 2011-2021: -9.42% (95% CI: -68.7% to 50.9%)

Annual trend (% change/year), 2011-2021: -1% (95% CI: -8.6% to 5%)

Warbling Vireo

Total percent change, 1970-2021: -25.4% (95% CI: -51.7% to 4.32%)

Annual trend (% change/year), 1970-2021: -0.6% (95% CI: -1.4% to 0.1%)

Total percent change, 2011-2021: -2.62% (95% CI: -24.4% to 20.8%)

Annual trend (% change/year), 2011-2021: -0.3% (95% CI: -2.7% to 2%)

Western Kingbird

Total percent change, 1970-2021: -97.8% (95% CI: -100% to -89.8%)

Annual trend (% change/year), 1970-2021: -7.2% (95% CI: -11.5% to -3.8%)

Total percent change, 2011-2021: -39.5% (95% CI: -94.9% to 45.6%)

Annual trend (% change/year), 2011-2021: -4.9% (95% CI: -17.3% to 5.5%)

Western Meadowlark

Total percent change, 1970-2021: -99.6% (95% CI: -99.9% to -99.3%)

Annual trend (% change/year), 1970-2021: -10.4% (95% CI: -11.7% to -9.2%)

Total percent change, 2011-2021: -53.2% (95% CI: -81% to -16%)

Annual trend (% change/year), 2011-2021: -7.3% (95% CI: -13.9% to -0.9%)

White-breasted Nuthatch

Total percent change, 1970-2021: 143% (95% CI: 61.6% to 227%)

Annual trend (% change/year), 1970-2021: 1.8% (95% CI: 1% to 2.4%)

Total percent change, 2011-2021: 2.69% (95% CI: -16% to 25.2%)

Annual trend (% change/year), 2011-2021: 0.3% (95% CI: -1.7% to 2.3%)

Wild Turkey

Total percent change, 1970-2021: 79900% (95% CI: 5830% to 489000%)

Annual trend (% change/year), 1970-2021: 14% (95% CI: 10% to 18.7%)

Total percent change, 2011-2021: 42.8% (95% CI: -46.4% to 161%)

Annual trend (% change/year), 2011-2021: 3.6% (95% CI: -4.5% to 10.6%)

Willow Flycatcher

Total percent change, 1970-2021: % (95% CI: % to %)

Annual trend (% change/year), 1970-2021: % (95% CI: % to %)

Total percent change, 2011-2021: -14.7% (95% CI: -45% to 10.2%)

Annual trend (% change/year), 2011-2021: -1.6% (95% CI: -5.4% to 1.2%)

Wilson’s Snipe

Total percent change, 1970-2021: -41.8% (95% CI: -78.7% to -5.04%)

Annual trend (% change/year), 1970-2021: -1.1% (95% CI: -2.7% to 0.1%)

Total percent change, 2011-2021: -17.8% (95% CI: -45.3% to 15.7%)

Annual trend (% change/year), 2011-2021: -1.9% (95% CI: -5.6% to 1.6%)

Wood Duck

Total percent change, 1970-2021: 105% (95% CI: -12.3% to 243%)

Annual trend (% change/year), 1970-2021: 1.4% (95% CI: -0.1% to 2.5%)

Total percent change, 2011-2021: 8.24% (95% CI: -22.5% to 60.3%)

Annual trend (% change/year), 2011-2021: 0.8% (95% CI: -2.5% to 4.8%)

Wood Thrush

Total percent change, 1970-2021: 287% (95% CI: 31.5% to 680%)

Annual trend (% change/year), 1970-2021: 2.7% (95% CI: 1.1% to 4.3%)

Total percent change, 2011-2021: 58.2% (95% CI: -2.37% to 148%)

Annual trend (% change/year), 2011-2021: 4.7% (95% CI: -0.2% to 9.5%)

Yellow-bellied Sapsucker

Total percent change, 1970-2021: 273% (95% CI: 50.4% to 690%)

Annual trend (% change/year), 1970-2021: 2.6% (95% CI: 1.2% to 4.3%)

Total percent change, 2011-2021: 9.98% (95% CI: -33.2% to 55.4%)

Annual trend (% change/year), 2011-2021: 1% (95% CI: -3.3% to 5%)

Yellow-billed Cuckoo

Total percent change, 1970-2021: -68.6% (95% CI: -90.1% to -38.2%)

Annual trend (% change/year), 1970-2021: -2.2% (95% CI: -4% to -0.8%)

Total percent change, 2011-2021: 31.6% (95% CI: -21% to 138%)

Annual trend (% change/year), 2011-2021: 2.8% (95% CI: -1.8% to 9.3%)

Yellow-headed Blackbird

Total percent change, 1970-2021: -93.1% (95% CI: -97.8% to -86.1%)

Annual trend (% change/year), 1970-2021: -5.1% (95% CI: -6.8% to -3.6%)

Total percent change, 2011-2021: -49% (95% CI: -75.1% to -13.5%)

Annual trend (% change/year), 2011-2021: -6.5% (95% CI: -12.3% to -1.1%)

Yellow-throated Vireo

Total percent change, 1970-2021: 308% (95% CI: 116% to 567%)

Annual trend (% change/year), 1970-2021: 2.8% (95% CI: 1.7% to 3.9%)

Total percent change, 2011-2021: 48% (95% CI: 7.78% to 98.3%)

Annual trend (% change/year), 2011-2021: 4% (95% CI: 1% to 7.2%)

Yellow Warbler

Total percent change, 1970-2021: 105% (95% CI: 38.5% to 183%)

Annual trend (% change/year), 1970-2021: 1.4% (95% CI: 0.7% to 2.1%)

Total percent change, 2011-2021: -12.8% (95% CI: -32.1% to 5.7%)

Annual trend (% change/year), 2011-2021: -1.4% (95% CI: -3.6% to 0.7%)

 




By Sam Safran